Comparison Of Experimental And Theoretical Studies Of Nanocellulose Jute Fiber In The Polylactic Acid (PLA) Composite

Tang, Pei Chin (2020) Comparison Of Experimental And Theoretical Studies Of Nanocellulose Jute Fiber In The Polylactic Acid (PLA) Composite. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Development of nanocellulose reinforced polymer composites has attracted significant attention since the nanocellulose able to provide the composite with higher strength and tensile stiffness. The reinforcement of polylactic acid (PLA) using nanocellulose Jute fiber has gain interest of researchers with the goal of producing green composites material. This research was to investigate the effect of alkaline treatment on the characterization of jute fiber, to analyze the effect of nanocellulose loading on the Young's modulus and dispersion morphology in the composite based on the reported experimental studies and to evaluate the comparison of Young's modulus results obtained from reported experimental studies and theoretical equations. The project result was divided into 2 types, which are based on the laboratory results and based on the critical review. First, the jute fiber was chemically treated, and the untreated and alkali-treated fibers were analyzed under FTIR. After that, Young's modulus of 5 wt% and 10 wt% PLA nanocomposites were collected from three reported experimental studies. When adding 5 wt% of JNF to the matrix, modulus of JNF/PLA increased by 217.30%, but decreased after 5 wt% of fiber loading. However, as the content of nanofillers increases, SCNF/PLA and NFCHL/PLA composites show an increasing trend in Young's modulus. Halpin-Tsai and Percolation Theory have used to predict the modulus of the nanocomposite and the results compared with the reported experimental modulus. The predicted modulus results revealed agreed with the experimental modulus result of composites with nanofiller loading up to 5 wt% and showed deviation at 10 wt%. The deviation of the modulus result could be explained by the entanglements and agglomeration of nanofiber formed at a higher fiber loading. The minimum and maximum errors percentage found on the nanocomposite were 14.17 % and 82.08 % for the Percolation theory and 26.93 % and 74.12 % for the Halpin-Tsai model.

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